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Turn your API docs and notes into Anki-ready flashcards

Upload API docs, slides, notes or photos of pages and get flashcards with spaced repetition. Export to Anki on the Plus plan.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

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Why API flashcards work better when made from your own material

Studying APIs means memorizing HTTP methods, status codes, authentication schemes and rate limits, and Anki flashcards for API topics are a practical way to drill them. Cards made from your own course material match the exact terms your instructor or documentation uses.

Make one card per concept, such as one HTTP method or one status code, so each answer can be rated quickly.
Include the reason behind each answer, not just the term, so you can apply it to unfamiliar endpoints.
Review authentication and status codes often, since they appear in almost every API you will work with.
Export to Anki on Plus if you already keep your decks there, or study in the browser on the Free plan.

Example API flashcards for study

What does REST stand for?Representational State Transfer, an architectural style for web APIs that uses stateless requests over HTTP.

Which HTTP method is idempotent and usually used to replace a resource?PUT. Sending the same PUT request repeatedly leaves the resource in the same state.

What does HTTP status 401 mean?Unauthorized: the request lacks valid authentication credentials. A 403 means the credentials are valid but access is denied.

What is rate limiting in an API?A cap on how many requests a client can make in a time window, often answered with 429 Too Many Requests when exceeded.

What is the purpose of an API key?It identifies the calling client so the server can authenticate it and track or limit its usage.

Generate the full set

Any source you already have

Upload PDFs, DOCX, PPTX, plain text notes or photos of pages. Images are read with text recognition.

Spaced repetition built in

Cards come back at the right time, so HTTP methods and status codes stick instead of fading after one cram session.

Export to Anki

On Plus, take your cards into Anki with PDF, DOCX, Anki and CSV export.

How it works

Upload your material

Add the API docs, lecture slides or notes you are studying from.

Review the generated cards

Check each question and answer, then edit anything that needs fixing.

Study or export

Study in the browser on the Free plan, or export to Anki on Plus.

Generic decks often cover APIs in general, while your class may focus on REST, a particular authentication flow or one company's endpoints. Generating cards from those files keeps the review aligned with what you will be tested on.

Once the cards exist, spaced repetition schedules reviews so you see weak items more often. Pairing that with a short daily session is usually more effective than one long weekend review.

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Frequently asked questions

How many flashcards should I make for an API course?

Aim for one card per distinct concept, such as an HTTP method, a status code or an authentication scheme. Keeping each card to one idea makes it faster to recall and rate.

What should I memorize first when studying APIs?

Start with HTTP methods and status codes, since you will see them in nearly every API you use. Then move on to authentication, rate limiting and pagination.

Can I export DeckOwl flashcards to Anki?

Yes, Anki export is included in the Plus plan, which costs $39/year or $7.99/month. The Free plan lets you study in the browser but does not include exports.

Is there a free plan, and do I need a credit card?

The Free plan includes 3 generations per month and browser study, and no credit card is needed to start. Students get 40% off with a school email.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.